baber/WOPTO huggingface dataset:
Patent GB-954654-A (GB)
Title: Improvements in or relating to photo-multiplier circuits
Inventor: HAMBLETON JAMES
IPC: H01J43/30
Filed: 1960-09-30
Abstract: 954,654. Electron-multiplier circuits. JOYCE LOEBL & CO. Ltd. Sept. 15, 1961 [Sept. 30, 1960], No. 33561/60. Heading H3W. [Also in Division G1] In a photo-multiplier circuit, the anode voltage of the photo-multiplier tube is applied to control a transistor which adjusts the voltage applied to the dynode-chain to maintain the current through the photo-multiplier substantially constant. Referring to Fig. 1, the anode of the photo-multiplier 10 is connected via a cathode follower 12 to the base of an NPN transistor 13, the emitter-collector path of which is connected in series with the input to a step-up D.C.-D.C. converter 14 which supplies the dynode-chain. An increase in current in the photo-multiplier reduces the potential at its anode, and hence at the base of transistor 13, thus reducing the potential supplied to the converter 14. This results in a reduced potential supplied to the dynode chain, and hence reduces the current through the photo-multiplier. The converter 14 may be a transistorized push-pull converter having a ferrite core. In a modification, Fig. 2 (not shown), a PNP transistor is used in place of the NPN transistor of Fig. 1, its base being fed from the other end of the valve cathode resistor.
Patent GB-634959-A (GB)
Title: Improvements in preparation of ketones
IPC: C07C45/00
Filed: 1947-12-19
Abstract: Ketones of formula R.CO.(X).H, where R is n-alkyl, sec-alkyl, cycloalkyl or aralkyl, X is the radical derived from an aromatic vinyl compound, and n is 1-9, are prepared by treatment of an aromatic vinyl compound with a n-alkanal, sec-alkanal, cycloalkanal or aralkanal in the presence of a source of free radicals.  The latter may be derived from ultra-violet light, or from compounds which decompose on heating such as organic peroxides, hydrogen peroxide, per-salts, hydrazine derivatives and organo-metallic compounds.  Inert solvents such as n-hexane, cyclohexane or benzene may be used.  Specified aldehydes include acetaldehyde, octaldehyde, cyclohexanal, isobutyraldehyde and phenylacetaldehyde.  Aromatic vinyl compounds given include p-methyl- and p-chloro-styrene, vinylnaphthalene and vinyl anisole; styrene is preferred.  1-20 mols. of aldehyde per mol. of vinyl compound are preferably used, at 25-150 DEG  C.  In an example, n-butyraldehyde and dibenzoyl peroxide are treated gradually with monomeric styrene at 76 DEG  C. to give C3H7.CO(CH2CHPh)5.H.  In the Specification as open to inspection under Sect. 91 divinylbenzene is specified as a suitable aromatic vinyl compound. This subject-matter does not appear in the Specification as accepted.ALSO:Ketones of the formula R.CO.(X)n.H, where R is n-alkyl, sec.-alkyl, cycloalkyl or aralkyl, X is the radical derived from an aromatic vinyl compound, and n is 1-9, are prepared by treatment of an aromatic vinyl compound with a n-alkanal, sec.-alkanal, cycloalkanal, or aralkanal in the presence of a source of free radicals.  The latter source may be derived from ultra-violet light, or from compounds which decompose on heating, such as organic peroxides, e.g. acyl or alkyl peroxides, hydrogen peroxide, per-salts, hydrazine derivatives, and organo-metallic compounds such as tetraethyl lead.  An inert solvent may be used. Specified aldehydes include acetaldehyde, octaldehyde, cyclohexanal, isobutyraldehyde, and phenylacetaldehyde.  Aromatic vinyl compounds include p-methyl styrene, vinylnaphthalene, p-chlorostyrene and vinyl anisole; styrene is preferred.  1-20 mols. of aldehyde per mol. of the vinyl compound are preferably used.  The reaction temperature range is 25-150 DEG  C., particularly 65-100 DEG  C.  In an example, n-butyraldehyde and dibenzoyl peroxide are treated gradually with monomeric styrene at 76 DEG  C. to give C3H7.CO(CH2CHPh)5.H.  In the Specification as open to inspection under Sect. 91, divinylbenzene is specified as a suitable aromatic vinyl compound. This subject-matter does not appear in the Specification as accepted.
Patent GB-209917-A (GB)
Title: Pipe wrenches
IPC: B25B13/52
Filed: 1922-12-09
Abstract: 209,917. Cherne, A. G. Dec. 9, 1922. Chain wrenches; handles. - In pipewrenches of the kind comprising a hollow handle 10 carrying a toothed jaw 38 co-operating with the toothed links of a chain 22 secured at its inner end within the handle and adapted to engage at its outer end with hooks 46 on the handle, the chain is entirely enclosed' within the handla when not in use, and is preferably retracted within it by means of a spring 16. One end of this spring is secured to a plug 12 in the outer end of the handle, and the other is fixed to the end link 20 of the chain, a projection 26 on the link sliding in a groove extending part way inside the handle. The jaw end of the handle is formed into two branches 30, 32 from which reinforcing ribs 34, 36 extend. The end' link 40 of the chain is provided with a crosspin 42 for engaging behind the hooks 16.
Patent GB-411101-A (GB)
Title: Improvements in self propelled motor ploughs and other cultivating and crop gathering implements
IPC: A01B69/00
Filed: 1932-11-29
Abstract: 411,101. Implements for working land and harvesting crops; tractors. MASKELL, J. W., The Lodge, Creeksea, Burnham-on-Crouch. Nov. 29, 1932, No. 33712. [Classes 6 (i) and 6 (iii).] A motor farm implement or tractor comprising a main frame balanced on two driving wheels and an undercarriage pivoted on a vertical pivot at or near the centre of the main frame is provided with a rear wheel or pair of wheels mounted on the undercarriage and connected to the main frame by a linkage in such a manner that angular displacement of the undercarriage relatively to the main frame automatically effects a greater angular displacement of the rear wheel or wheels. The undercarriage 6 is pivoted on a vertical pivot 7 and is provided with a cross-slide 8 supporting the rear end of the main frame 1 through rollers 22. Two rear wheels 9, 9<1> are mounted in a frame 30 connected by either one or two longitudinal pivot bolts 35, 35<1> to the undercarriage 6. The vertical wheel supports 10, 10<1> are coupled together for steering by arms 18 and a tie-rod 15, one of the arms 18 being extended to form a lever 11 which is adjustably connected by a link 12 to the opposite side of the main frame. Steering is effected by means of a hand-wheel and worm gearing driving a pinion 16 mounted on the main frame and engaging a toothed sector 17 on the undercarriage. The wheels 9, 91 and the main wheels 5 are all adjustable along their axles. The undercarriage carries the driver's seat 23 and is provided with a hole 19 or a draw-bar or shackle for hauling purposes. The main frame is provided with handle-bars for use by a man walking behind. The beam or frame carrying the working tools is pivoted at the rear on the undercarriage and its front end is movable on the main pivot 7, being raised or lowered by means of a hand-lever. The tools may consist of ridgers 14, ploughs, hoes, cultivating tines, potato shims, sugar-beet lifters, mole-drainers,harrows &c. They may be fixed on a frame which rocks on a longitudinal axis under the tool beam. They may be removed when the implement is used as a tractor for hauling other implements. By removing the bolts 35, 351 the frame carrying the wheels 9, 91 may be detached. It may be replaced by a single wheel ; or the implement may be used without rear wheels. The main frame may carry the seat as well as the steering-column and controls. In an implement having one rear wheel, or two rear wheels carried by a single vertical pivot stem, a lever on that stem is linked to the main frame. Specification 131,518, [Class 6 (i)], is referred to.
Patent GB-503980-A (GB)
Title: Improvements in electric fuses
IPC: H01H85/42
Filed: 1937-12-06
Abstract: 503,980. Fusible cutouts. FERGUSON, A. D., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Dec. 6, 1937, No. 33738. [Class 38 (i)] In a fuse comprising a tube 1 of insulating-material provided with adaptors 4 and caps 7, 17 at the ends, the fuse element 10 is connected at one end to a plug 20 fitting a hole in the cap and at the other end to a terminal member 11 connected by a flexible conductor 12 to a plug 14 in the lower cap 7. The terminal member is a sliding fit in an inner replaceable fibre tube 9 so that, on fusion of the element 10, the terminal member and the conductor 12 are expelled into a chamber formed in the cap 7. An asbestos tube 16 surrounds the element between the plug 20 and terminal member 11. In another construction, both ends of the fuse element are connected to obturator members 11 and flexible conductors.
Patent GB-783709-A (GB)
Title: A process for the manufacture of hydrogen peroxide
Inventor: HOPKINS HUBERT BRIAN
IPC: C01B15/023
Filed: 1954-11-22
Abstract: In the production of hydrogen peroxide by the successive hydrogenation and reoxidation of phenazine, an alkyl-substituted phenazine or an alkyl ester of a phenazine carboxylic acid in an organic solvent solution, metallic palladium supported on a carrier is used as catalyst in the hydrogenation stage.  Carrier materials speciied are alumina, magnesia, magnesium hydroxide, titania, silica-alumina and siliceous material.  The catalyst may contain 0.1-10 per cent of palladium.  Solvents specified are amyl acetate and methyl cyclohexanol.  Specifications 718,306, 741,444, 744,634, 746,385, and 760,737 are referred to.ALSO:In the production of hydrogen peroxide by the successive hydrogenation and reoxidation of phenazine, an alkyl substituted phenazine or an alkyl ester of a phenazine carboxylic acid in an organic solvent solution, metallic palladium supported on a carrier is used as catalyst in the hydrogenation stage.  Carrier materials specified are alumina, magnesia, magnesium hydroxide, titania, silica-alumina and siliceous material.  The catalyst may contain 0.1-10 per cent of palladium.  In examples, phenazine dissolved in amyl acetate or methyl cyclohexanol acetate is hydrogenated to dihydrophenazine.  Specifications 718,306, [Group III], 741,444, 744,634, 746,385, and 760,737 are referred to.
Patent GB-836760-A (GB)
Title: Improvements in toy hypodermic syringes
IPC: A63H33/30
Filed: 1958-10-22
Abstract: 836,760. Toy medical syringes. GLASS, M. I. Oct. 22, 1958 [Jan. 20, 1958], No. 33776/58. Class 132(3) A toy simulating a medical syringe comprises a translucent barrel 11, a blood coloured element 24 and an opaque plunger sleeve 22 slidable between them, the barrel having a nozzle 14 and a spring loaded needle 19. On withdrawing the plunger, the coloured element is held against the inner end 12 of the barrel by a spring 29 and is gradually exposed to view thus simulating the filling of the syringe and, on pushing the plunger back into the barrel, the sleeve covers the coloured element and the syringe appears to be emptying. The coloured element can be secured within the plunger by resilient forked ends 27 releasably engaging in a bore in the plunger head so that on demonstrating the plunger the coloured element remains within it hidden from view and the syringe appears to be empty. The principal parts may be of plastic.
Patent GB-1160634-A (GB)
Title: Chair Control
IPC: A47C3/026
Filed: 1967-07-21
Abstract: 1,160,634. Seats. KNOLL ASSOCIATES, Inc. 21 July, 1967 [2 Aug., 1966], No. 33778/67. Heading A4J. In a tilting office chair, having a hollow support column 8, housing vertical springs 53, 54 or a stack of resilient conical washers, a lever 40 is mounted on a pivot 32 and is adjustable to pre-stress the springs. Metal bracket 5a is formed, by die-casting, about the head 20, of adjustment screw 19. On tilting the chair rearwardly, the springs are compressed but prevented from contacting the metal column 8, by plastic liner 55. The tilting is limited by stop 18 engaging flange 27a.
Patent GB-1187665-A (GB)
Title: Improvements in Pressing Machines for Use in the Laundry, Dry Cleaning and Clothing Industries
Inventor: HOLYOAKE GEORGE PHILIP
IPC: D06F71/36
Filed: 1967-07-22
Abstract: 1,187,665. Laminating presses. ISAAC BRAITHWAITE & SON ENGS. Ltd. 18 June, 1968 [22 July, 1967], No. 33813/67. Heading B5N. [Also in Division D1] A press, wherein textile pieces may be laminated together by heat and pressure between two surfaces, is characterized in that (i) one surface is movable relative to the other and is formed by a flexible sheet 48 which is bonded to a flexible tubular gaiter 32 bonded to a base-plate 20 so that a hollow chamber is defined by said sheet, gaiter and base-plate, and (ii) said chamber is inflated by supplying gas under pressure and deflated by removing said gas, sheet 48 moving respectively towards and away from the other surface. As shown, the lower surface is formed by conveyer 14 which carries articles 16, 18 for pressing and moves over stationary, heated member 10. Pipes, e.g. 30, are provided for the supply of air from a compressor and its removal by means of a suction pump. The sheet 48 abuts a perforated baffle plate 60 in its retracted position. Sheet 48 may comprise stainless steel, aluminium, plastics, rubber, glass fabric or a glass fabric-rubber laminate. Gaiter 32 may comprise silicone rubber or silicone-impregnated polyester fabric. In operation, sheet 48 becomes heated after repeated contact with heated member 10, thereby aiding pressing. Alternatively (Figs. 7-9, not shown), the flexible sheet 48 may form the lower pressing surface, and the press may have a " scissors " action.
Patent GB-1142076-A (GB)
Title: Ceramic insulating material
IPC: H01B3/02
Filed: 1966-07-27
Abstract: 1,142,076. Ceramic insulating material. SCHWEIZERISCHE ISOLA-WERKE. 27 July, 1966 [28 July, 1965], No. 33833/66. Heading C1J. A ceramic insulating material comprises at least 68% by volume of pyrophillite or agalmatolite to prevent shrinkage on firing. Other components of the insulating compositions given in the examples are talc, feldspar, clay, quartz and wax emulsion.
Patent GB-1554642-A (GB)
Title: Central derailleur for cycles
IPC: B62M9/1342
Filed: 1976-08-13
Abstract: A central derailleur of the transmission chain of bicycles with central gears having several crown gears, has the chain guide (3) connected to the support bracket (1) of the derailleur by means of a system of levers (6) in the form of an articulated parallelogram and all the components of the derailleur are on one side of the bracket. In this derailleur all the parts - except for the springs, pins and screws - are made of sheet metal. <IMAGE>
Patent GB-468191-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N7/06
Filed: 1936-12-11
Abstract: 468,191. Television. OKOLICSANYI, F. VON. Dec. 11, 1936, No. 34047. Convention date, Dec. 12, 1935. [Class 40 (iii)] Relates to television systems wherein highspeed scanning at the receiver is avoided. According to the invention, a continuously varying frequency is generated at the transmitter, is modulated by the picture signals, and modulates a single carrier wave of constant frequency ; the receiver comprises a plurality of tuned circuits, equal in number to the number of picture points in a line, each circuit having a different natural frequency and a suitably chosen decrement time, and each being connected to a light relay. At the transmitter, for generating the varying frequency there may be provided an optical grating on which the image to be transmitted is projected ; the lines of the grating vary continuously from coarse to fine in the direction of scanning. The light relays at the receiver may each comprise a piezo-crystal or Kerr cell device, or a mechanically tuned oscillograph, producing a line of light which corresponds to a line of the transmitted picture, the line being swept over a screen by a lowspeed scanner such as a mirror drum. Alternatively, the whole picture may be presented simultaneously by using light relays of the kind described in Specification 439,236.
Patent GB-411140-A (GB)
Title: Improvements in or relating to power press tools or the like
IPC: B30B15/28
Filed: 1932-12-01
Abstract: 411,140. Testing physical qualities of materials. SINCLAIR, H., 6, The Crest, Surbiton Hill, and FRASER, A., 43, Foxley Lane, Purley, both in Surrey. Dec. 1, 1932, No. 34058. [Class 106 (ii).] In power-press testing machines, power is transmitted through a hydraulic coupling of the kinetic type, the slip in the coupling automatically reducing the speed of the machine as resistance increases and enabling the machine to stop when the resistance rises to a predetermined value although the driving motor continues to rotate. In one form, working and retracting cylinders 2, 24, Fig. 1, and a tank 16 are connected under the control of valves 19, 20 to a pump 3 driven through the hydraulic coupling 5 from a continuously running motor 4. The coupling may have a slip characteristic suited to the particular operating conditions as described in Specification 385,086, [Group XXIX], and may have a scale 15, Fig. 3, indicating the maximum pressure to be generated ; by setting a desired indication against a pointer 14, the filling opening 12 of the coupling is disposed so that the degree of filling of the coupling is determined by overflow from the opening 12. In an alternative form of coupling, similar to one of the examples described in Specification 328,028, [Class 69 (ii)], the degree of filling of the coupling is determined by means of a scoop tube 29, Fig. 5, connected to return passages 32, 33 and to a manually operated reversible gear pump 35, Fig. 6, having a foot valve submerged in a reservoir 8<a>; a float 37 in the reservoir operates a pointer 14a over a pressure scale 15<a>.
Patent GB-949114-A (GB)
Title: Improvements in or relating to rotary oil burners
Inventor: CHEETHAM HARRY ALAN
IPC: F23D11/04
Filed: 1961-09-22
Abstract: 949,114. Oil burners. HAMWORTHY ENGINEERING Ltd. Dec. 21, 1962 [Sept. 22, 1961], No. 34065/61. Heading F4T. A rotary cup burner includes a windbox 10 which supplies primary air to a fan 3 and secondary air to the flame. The primary air passes from the windbox 10 along a passage 5 to the fan 3 and is controlled by a rotatable cylindrical valve 8 comprising an apertured sleeve surrounding an apertured cylindrical wall. The valve is actuated by a rod 9 linked to a fuel oil control mechanism. The fan and the rotating atomizer cup 1 are mounted on the shaft 2 of an electric motor. The casing surrounding the fan and the windbox are made in two parts hinged together at one side.
Patent GB-1163112-A (GB)
Title: Improvements in the Manufacture of Escalator Handrails.
Inventor: HALLAM WILLIAM GORDON
IPC: B66B23/24
Filed: 1965-08-10
Abstract: 1,163,112. Laminates. GREENGATE & IRWELL RUBBER CO. Ltd. 8 Aug., 1966 [10 Aug., 1965], No. 34118/65. Heading B5N. [Also in Division B8] A conventional shaped handrail for escalators and the like comprises a plurality of plies of rubberized fabric b<SP>1</SP> reinforced on the underside with a ply of cord fabric b<SP>2</SP>, e.g. rayon, nylon, Terylene (Registered Trade Mark) or glass cord fabric, in turn lined with a further ply of rubberized fabric b<SP>3</SP> to contact the guide rails. The outer ply of rubberized fabric b<SP>1</SP> is impregnated with a nitrile rubber based compound to bond an outer cover b<SP>4</SP> thereto during curing and vulcanization. The outer cover b<SP>4</SP> is a mixture of synthetic polymers, e.g. polyvinyl chloride and nitrile rubber. The ply of rubberized fabric b<SP>3</SP> in contact with the guide rails may be coated with polytetrafluoroethylene to reduce the coefficient of friction.
Patent GB-1377983-A (GB)
Title: Methods of and apparatus for the treatment of manure
IPC: C05F/
Filed: 1972-07-12
Abstract: 1377983 Treatment of wet manure DOUGLAS ROWNSON Ltd 12 July 1972 [21 July 1971] 34143/71 Heading C1B A method of treating manure is illustrated with reference to Fig. 1 and comprises the steps of continuously supplying wet manure from a first source 1 and dry manure from a second source 2, mixing the wet and dry manures, introducing the mixture into a flow of hot gas in a closed circuit 4 so as to dry the mixture, continuously withdrawing dried material from the said flow via separator 6, adding heat to the gas by passing it through a pre-heater 9, consuming odours in the gas by burning it in chamber 10, discharging part of the gaseous products of the burnt gas to atmosphere by way of said preheater so as to add heat to the gas as aforesaid, and introducing another part of the said gaseous products of the burnt gas into said flow. A suitable apparatus is described with reference to Fig. 2 and comprises a manure mixer 3, means 20 for continuously supplying wet manure from a first source I to the mixer 3, means 21 for continuously supplying dry manure from a second source 2 to the mixer, a hot flow as circuit 4 including a combustion chamber 10, a gas pre-heater 9 upstream of the combustion chamber and a separator 6 upstream of the preheater, means 22, 23, 24 for continuously introducing manure mixed by the mixer into that part of the hot gas flow circuit disposed between the combustion chamber and the separator so that the manure, mixture is subject to drying prior to entering the separator 6, means 25 for continuously withdrawing dried material from the separator, means 26 for consuming odours in the gas by burning the gas in the combustion chamber, means 27,28 for discharging part of the burnt gas to atmosphere by way of said preheater whereby gas flowing through the preheater to said combustion chamber is raised in temperature, and means for introducing another part of the gaseous products of the burnt gas into said part of said hot gas flow circuit. Poultry or other animal manure may thus be dried without releasing unacceptable amounts of odours to the atmosphere.
Patent GB-176479-A (GB)
Title: A new or improved apparatus for the distribution of stone dust and the like in mines
IPC: E21F5/10
Filed: 1920-12-03
Abstract: 176,479. Naylor, A. Dec. 3, 1920. Dust and like distributors. - A device for distributing stone dust &c. in coal mines is arranged within a mine tub 10 and comprises a hopper 6 for the dust provided at its bottom with an Archimedian screw 8 for feeding the dust into a delivery pipe 4 through which is blown a current of air induced by a fan 1. The fan and the screw 8 are driven by gearing from a shaft 15 itself driven from one of the running-wheel axles 11 through a sprocket 14 normally loose on the shaft 15 and adapted to be keyed thereto by a clutch. The delivery pipe 4 terminates in a set of nozzles 5 which may be detachable.
Patent GB-353806-A (GB)
IPC: C09K5/04
Filed: 1930-11-13
Abstract: 353,806. Refrigerating. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Nov. 13, 1930, No. 34210. Convention date, Dec. 6, 1929. [Class 29.] Absorption systems.-Toluene is used as refrigerant with paraffin oil as absorption medium. A neutral gas, preferably argon, may be used to counterbalance in part the difference between condenser and evaporator pressures. Specification 351,713 is referred to.